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Informix - Problembeschreibung

Problem IT07918 Status: Geschlossen

USING DRDA PROTOCOL A SELECT INVOLVING INTERVAL TYPE CAN SOMETIMES CORRUPT
LARGE AMOUNTS OF MEMORY DUE TO UNEXPECTED DATA

Produkt:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problembeschreibung:
The thread that was found to be corrupting memory was doing so 
in the following stack: 
 
memcpy() 
SqlPutDataCheck() 
drda_putcoldata_checksplit() 
drda_puttuple() 
exfetch() 
sql_nfetch() 
drda_nfetch() 
_Z16sqljs_ddm_opnqryP14db2UCinterfaceP13sqljDDMObject() 
sqljsParse() 
do_drdamain() 
drdamain() 
spawn_thread() 
th_init_initgls() 
startup() 
 
It was running a query which had the following sub-select which 
was using the interval data type: 
 
select col1, (end_ts - begin_ts)::interval minute(9) to minute 
as total_time from tab1 
 
It corrupted so much memory that several threads crashed 
simultaneously with then all kinds of different stack traces. 
 
When looking at the memory, it would appear as if the contents 
of the Informix shared memory had been shifted from 1 location 
to another.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* 12.10.XCX                                                    * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update to IBM Informix Server 12.10.XC6                      * 
****************************************************************
Local-Fix:
Lösung
Problem Fixed In IBM Informix Server 12.10.XC6
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
24.03.2015
30.12.2015
30.12.2015
Problem behoben ab folgender Versionen (IBM BugInfos)
12.10.xC6
Problem behoben lt. FixList in der Version
12.10.xC6 FixList